Hi Laurent If you want to see exceptions, you will have to use *submit* rather than *run*. Exceptions are only generated when the response is JSON decoded and *run* does not do this.
I strongly suggest that you upgrade to py2neo 2.0 and, if possible, migrate to using Cypher transactions instead of batches. Nigel On 6 September 2015 at 19:06, <[email protected]> wrote: > Hi Nigel, > > Thanks for the answer. Very much appreciated and always good to get a > confirmation from the expert :) > I'm still investigating the case but progress is very slow because I can't > reproduce the problem with "artificial" simple code. > > For now, my intuition is that a cypher query or a write batch is stuck and > locks the next ones. My main problem is that I can't get any log of an > exception. > Currently, I'm checking if enabling execution_guard could help to unlock > the situation. > > Just one more question: In Py2neo 1.6, we have the following code for > WriteBatch: > > def run(self): > return self._execute().close() > > def submit(self): > responses = self._execute() > try: > return [BatchResponse(rs).hydrated for rs in responses.json] > finally: > responses.close() > > One of my previous test seems to indicate that run() don't forward > exception but more importantly for me, it seems that it doesn't freeze the > processes :) > I guess this behavior is related to the execution of close(). So, I wonder > if a modification of submit() method may help to solve my problem. Do you > see a potential problem with this modification ? > > def submit(self): > try: > responses = self._execute() > return [BatchResponse(rs).hydrated for rs in responses.json] > finally: > responses.close() > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
